BIOLOGY: CONCEPTS AND INVEST. ACCESS
5th Edition
ISBN: 9781264448678
Author: Hoefnagels
Publisher: MCG
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Chapter 4.5, Problem 5MC
Summary Introduction
To determine:
Distinguish among simple diffusion, facilitated diffusion and active transport.
Introduction:
In diffusion, the particle moves across the membrane from higher to lower concentration. In simple and facilitated diffusion there is no use of energy where else active transport uses energy like ATP.
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Which of the following proteins or protein complexes is directly required for the targeting of mitochondrial inner membrane multipass proteins, such as metabolite transporters, whose
signal sequence is normally not cleaved after import?
OA. TIM22
OB. TIM23
C. OXA
OD. Mia40
OE SAM
QUESTION 9
An animal cell has been wounded and has a small rupture in its plasma membrane. Which of the following is more likely to happen next?
OA. The cell rapidly cleaves by cytokinesis.
OB. The rate of receptor-mediati endocytosis is increased.
OC. The rate of exocytosis is increased.
OD. The rate of pinocytosis is increased.
For the a subunit of a trimeric G protein,
A. a G-protein-coupled receptor GPCR) acts as a guanine nucleotide exchange factor (GEF), whereas a regulator of G protein signaling (RGS) can act as a GTPase-activating protein
(GAP).
B. a GPCR acts as a GAP, whereas an RGS can act as a GEF.
C. both a GPCR and an RGS can act as a GEF.
O D. both a GPCR and an RGS can act as a GAP
OE. None of the above.
Chapter 4 Solutions
BIOLOGY: CONCEPTS AND INVEST. ACCESS
Ch. 4.1 - What are some examples of the work of a cell?Ch. 4.1 - Prob. 2MCCh. 4.1 - Prob. 3MCCh. 4.1 - Prob. 4MCCh. 4.2 - What is metabolism on a cellular level?Ch. 4.2 - Prob. 2MCCh. 4.2 - Prob. 3MCCh. 4.3 - What are the main parts of an ATP molecule?Ch. 4.3 - Prob. 2MCCh. 4.3 - Describe the relationships among endergonic...
Ch. 4.4 - Prob. 1MCCh. 4.4 - Prob. 2MCCh. 4.4 - Prob. 3MCCh. 4.4 - Prob. 4MCCh. 4.4 - List three conditions that influence enzyme...Ch. 4.5 - What is diffusion?Ch. 4.5 - What types of substances diffuse freely across a...Ch. 4.5 - Prob. 3MCCh. 4.5 - Prob. 4MCCh. 4.5 - Prob. 5MCCh. 4.5 - Prob. 6MCCh. 4.6 - How does a knifefish adjust its electric field?Ch. 4.6 - Prob. 2MCCh. 4 - Prob. 1MCQCh. 4 - Building proteins _____ energy; ATP hydrolysis...Ch. 4 - How does an enzyme affect the energy of a...Ch. 4 - Prob. 4MCQCh. 4 - Prob. 5MCQCh. 4 - Some people claim that lifes high degree of...Ch. 4 - List some examples of endergonic and exergonic...Ch. 4 - Why do electron transport chains release energy?Ch. 4 - Provide an example of an appliance that uses...Ch. 4 - Name at least four ways that a cell uses ATP.Ch. 4 - Use what you know about enzymes to propose an...Ch. 4 - Prob. 7WIOCh. 4 - Prob. 8WIOCh. 4 - Prob. 9WIOCh. 4 - Liver cells are packed with glucose. If the...Ch. 4 - Prob. 1PITCh. 4 - Prob. 2PITCh. 4 - Prob. 3PIT
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- Stroma Light 4 H 4 H I Thylakoid- membran 2 H₂O D1 D2 Min Light 2,6 ATP 2 NADP+ 2 NADPH/H+ Fp 2,6 ADP +2,6 P 8 H+ 12 H+ 4 H+ Lumen PS II Cyt bef PS I ATP-Synthase 12345 5a 5b 6arrow_forwardWhich of the following statements is TRUE regarding the signal recognition particle (SRP)? OA. SRP is made up of RNA and Proteins B. SRP binds to the signal sequence OC. SRP binds to the elongation factor binding site on the ribosome and pauses translation D. All of the above are true statements OE. None of the above are true statementsarrow_forwardWhich of the following pathways does NOT directly deliver materials to lysosomes? OA. Endocytosis B. Exocytosis OC. Phagocytosis OD. Autophagy OE. Macropinocytosisarrow_forward
- You suspect a protein to be secreted out of a cell. What experiment would you perform to follow the movement of this protein through the secretory pathway? A. Pulse - Chase Experiment OB. Signal Sequence Deletion C. Signal Sequence Mutation OD. All of the above E. None of the abovearrow_forwardA schematic drawing of the secretory and endocytic pathways is presented below. Indicate which component in the drawing (A to J) corresponds to each of the following. Your answer would be a 10-letter string composed of letters A to J only, c.g. HICDJABFGE. nuclear envelope Early endosome Late endosome ER Lysosome A ( ) cis Golgi cisterna () modial Golgi cisterna () trans Golgi cisterna [] cis Golgi network (CGN) () trans Golgi network (TGN) () Secretory Vesicle B C D E CYTOSOL F G H plasma membranearrow_forwardWhich of the following guide transport vesicles to their target membrane? A. Rab monomeric GTPases B. Signal Sequence OC. Heat Shock Proteins OD. All of the above O E. None of the abovearrow_forward
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